Puncture-proof layer for tires.



, .LF. s. 0pm. PUNCTURE PROOF LAYER FOR TIRES.

VAPPLICATION HLED FEB. 2|, 19176.

` 41,219,033. l 'Patented'uanl, 1917.

UNITED sfrarns Parana@ oFFioE LEVI s; onnLL` oF FonEsTv'ILLE. NEW 1703K.

Specification of Letters Patent. I

PUNoTUaERoor LAYER Fon Trans.

V1atented'Mar. 13, 19117.

Application filed February 21, 191.6. Serial No. 79,682:

Vdo hereb)v declare the following' to be a full,

clear, and exact description of 'the inven- 1 tiOn,'such as will enahle'others skilled in the art to which. it appertains to niakeand use the same.

Thisinvention relates to an improved blow-ont and puncture proof lining: tor tires and an objet-t ot` the invention is to provide an improved device ot' this design7 in 'which improved. si1nple.feiiicie1 1t and practical teatnres of construction are involved.

One ot' the features ot' the iii'vention is.

the A,provision of an inner nietal tube con struced from thin sheet steel, upon the interfief A vhich the 'usual Vinner inflatingtube is L rrangfed. l r l Another feature of the invention is the provision of apair of canvas shields adjacent the outerl face of the steel tube, and

upon the interior o'f the outer clenched tie casing. said canvas shields having an interinediatewsteel shield.'constructed of three sections. the central section. and .two side sections. the central section being considerthe 51de sectionzi, so that 1n case a tack-or ahlv. thicker than theside. sections,therebxv preventing' a tack or the like from penetrating sufhcientlv to puncture the', inner tube.4

In` other words, should a' -tack on the like 'puncture the outer casing of the tire und one of the `canvas sliieldsQthe point of the tack or the like will be bent upon the 4central section. V Should the tack or the like .penetrate rtlieouter casing of the tire and theachacent canvas shield adjacent either one ofthe sidev will be clesections` the point of the .tack flected'. f

Another feature of the invention is to construct the side sections of the sheet metal shield with overlapping tongues, so that the side sections of saidshield'will easily bend or tick. Y- l In practical fields' the details of construction iii-av 4 within the scope of what isclaimed.

The invention comprises furtherfeatures and combination of parts, as hereinafter set Vfort-h, shown 'in' the Adrawings and claimed.

217 ofthe op necessitate alterations, falling casing 11, t

Referring moi e especialliw to the drawing,`

1. designates an iniier inet-al tube, which' is constructed ot very thin sheet-steel. the edge portions of" which are folded 'together as shown at 2 'to provide',-a secure joint. The usual in ating albe 3 is arranged on'tlie inte-rior of the 'si reet steel tu'be 1. Arranged 'adjacentthe exterior o'fthe sheet metal tube 1 is a canvas shield 4, betweenwhi'ch and a second 'canvas'shield' 5, a steel shield 6 is interposed. .Tlis intermediate steel shield 6' comprises three sections, the 4intermediate `or central section 7 and the two side sections S and 9, which are vbrat/ed or otherwise connected at-l() t-o the central section 7.' The central section is 4more or less thicker than` the likel penetrites .the outer casing' 11 of the tire and the shield 5, the" end ot' the tacky or the like will te bent from contacting with thev section '7. However, should a 'taelt or the like penetrate the outer'casing 11 of the tire andlhe Ashiald' adjacent either one of the side sections, tlie ,tack'or the like `will be deflectedupon the side sect-ions.V 'In V both of these insta-ricos, the inne;` infiating tube is I i preserved against puncture. The'outer eas# ing of the tire is provided with-the usual cle-lich' 'ang'esli ofthe usual rim 1 4. 4Lap' ping from the opposite lower sides' 15 offthe Y canvasshields V4 and' 5 vis a rubberstrip. 16, substantially U-shaped in crosssection,`

es 'elench 'ribs 12, which nre engagedb'y the roo.

which'U-shped strip' tits between the parts i. y

18`1bet-w'een the interior surface-of ther 1 strip 16 and 'the ,sheet metal Atube 1, to permit the tirfe give` The Iside sections 8 and l osi teinner sides ofthe outer tie ere being" an interval of agace 11 bei'4 are slitted artially transverse as shown side sections, the intermediate section being at 19, there y roviding iexible'tongues 20, thicker than the side sections andl adjsnt which arejover apped to permit-the s'id'e secn the tread of the tire, said side sections being tions t0 yield incident to'depression 'of the slitted partially transversely,thereby form- 6 tire. ing tongues, which are overlapped tu per- 2o The invention'having been setvforth,.what mit the inetal shield to yield incident to the is claimed as'newgandbuseful is depression of the tire. v In atire construction, an inner sheet metal In testimony whereof I have signed my tube, an outer tire casing, a pair -of canvas naine to this,` specification in the'presence of 10 selds between tle "shleet metall tlbe and two subscribing witnesses.

t e tire casing, an asl -eet meta s' ield interposed between'the canvas shields and ex- LEVI S' ODELL' tending partially transversely, of the tire, Witnesses: ,said sheet metal shields comprising three 'A. G..KINGSLEY, 15 sections, an intermediate section, and two C. C. COL-Nimm. 

